Home:we should leave the tv on.
we should reacycle papers and magazine.
we sholuld not use so much water
we should both pages of paper.
we sholud not use plastic bags.
we sholuld eat organic foods.
Classroom:we should not leave the computer on(eğer varsa)
we sholuld turn off the lights
we sholuld not open the window when the central-heating is on.
we should put the papers in the recycle bin.
you sholuld not waste the energy.
Out/Street: we should take a bus to school
we should not throw plastics on the street
we should not use parfumes
you sholuld plant more trees.
we should use smaller cars.
we shouldn't smoke....